Răspuns:
a) a = 3/48 + 6/72 - 4/18 - 5/108 =
= 1/16 + 6/72 - 4/18 - 5/108 =
= 1/16 + 1/12 - 4/18 - 5/108=
= 1/16 + 1/12 - 2/9 - 5/108=
= 27 + 36 - 96 -20 totul supra 432=
= -53/432=
Răspuns :
[tex] - \frac{53}{432} [/tex]
